<template>
    <div>
        <!-- 面包屑区域 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 视图卡片区域 -->
        <el-card >
            <!-- 搜索  添加按钮 -->
            <el-row :gutter="20">
                <el-col :span = '8'>
                    <el-input placeholder="请输入内容" v-model = "queryInfo.query" clearable @clear = "getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span = '4'>
                   <el-button type = "primary" @click="goAddPage">
                       添加商品
                   </el-button>
                </el-col>
            </el-row>

            <!-- 表格区域 -->
            <el-table :data="goodsList" border stripe>
                 <el-table-column type="index">
                </el-table-column>
                <el-table-column prop="goods_name" label="商品名称">
                </el-table-column>
                 <el-table-column prop="goods_price" label="商品价格(元)" width="100px">
                </el-table-column>
                 <el-table-column prop="goods_weight" label="商品重量" width="70px">
                </el-table-column>
                <el-table-column prop="add_time" label="创建时间" width="150px">
                    <template slot-scope="scope">
                        {{scope.row.add_time | dateFormat}}
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="140px">
                    <template slot-scope = "scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row)"></el-button>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[5, 10, 15, 20]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
            </el-pagination>
        </el-card >
    </div>
</template>
<script>
export default {
    data(){
        return {
            //商品请求参数
            queryInfo:{
                //查询参数
                query:'',
                //当前页码
                pagenum:1,
                //每页显示条数
                pagesize:10
            },
            //所有商品参数
            goodsList:[],
            total:0
        }
    },
    created(){
        this.getGoodsList()
    },
    methods:{
        //打开页面获取商品参数
        async getGoodsList(){
            const {data:res} = await this.$http.get('goods',{
                params:this.queryInfo
            })
            if(res.meta.status !== 200) return this.$message.error('获取商品数据失败！')
            // console.log(res.data);
            this.goodsList = res.data.goods
            this.total = res.data.total
        },
        //每页显示的条数变化
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        //变化到 最新的 页
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        //点击删除按钮  删除当前商品数据
        async removeById(row){
            //删除之前要进行弹框提示，确认后方可删除
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err=>err)   
            if(confirmResult !== 'confirm'){
                return this.$message.info('已取消删除')
            }
            const {data:res} = await this.$http.delete(`goods/${row.goods_id}`)
            // console.log(res);
            
            if(res.meta.status !==200) return this.$message.error('删除商品失败！')
            this.$message.success('删除商品成功！') 
            this.getGoodsList()
        },
        //跳转到添加商品页面
        goAddPage(){
            this.$router.push('/goods/add')
        }
    }
}
</script>
<style lang="less" scoped>

</style>